Lubricating device



2 Sheets-Sheet l w my f. \\MN 9% Q d M W W Nu Ru. 4 45 0d. 16, 1934. A. c. TAYLOR ET AL LUBRICATING DEVICE Filed Oct. 27, 19:53

Oct. 16, 1934. -A. c. TAYLOR ET AL LUBRICATING DEVICE Filed Oct. 27, 1935 2 Sheets-Sheet 2 Patented Oct. 16, 1934 PATENT OFFEE LUBRICATING DEVICE Alfred C. Taylor and Edward S. Du Bose, Jacksonville, Fla.

Application October 27,

3 Claims.

The subject-matter of the present invention relates to lubricating devices and the improvements are directed to novel means whereby a pre-determined amount of a lubricant, such as oil, or the like, may be applied to a part to be oiled.

Primarily, the object of the invention resides in the provision of a device of the above-mentioned character whereby a relative large quantity of a lubricant may be ejected by force-feed means, under the manual control of the operator, in suitable quantities and in accordance with the needs of the service.

Another object is to provide means, susceptible of adjustment, whereby the quantity of the lubricant to be ejected is directly under the control of the operator at all times.

Another object of the invention is to provide a device which may be operated withone hand when applying a lubricant to a member to be oiled and also to manipulate a force-feed mechanism for ejecting said lubricant.

Still another object resides in the provision of a device which is sturdy in construction, inexpensive to manufacture and well adapted for the purposes for which it is designated.

Further objects and advantages will become apparent hereinafter.

In the drawings:

Figure 1 is a side elevation of the device.

Fig. 2 is an end elevation as viewed at the right of Fig. 1. V

Fig. 3 is a sectional view, slightly enlarged, on the plane of the line 3--3 of Fig. 1.

Fig. 4 is a sectional detail, slightly enlarged, to illustrate the oil check valve arranged in the oiler tip. f

; Fig. 5 is a fragmentary sectional view of the piston and its associated parts.

Fig. 6 is a side elevation of our improved device showing a pistol-grip arrangement for operating the piston.

Fig. '7 is a sectional view on the line 7--7 of Fig. 6.

Fig. 8 is a sectional view, slightly enlarged, taken on the plane of the line 8-,8 of Fig. 6

Fig. 9 is an enlarged sectional'view through the oiler tip to show the check valve.

Fig. 10 is a sectional view showing the construction of the piston;

Referring now more in detail to the accompanying'drawings wherein like characters of reference denote similar parts throughout the several views, let 5 indicate the cylinder carrying at one end the fitting 6, said fitting being provided 1933, Serial No. 695,521

with a boss 7 having a threaded opening 8 for the reception of plug 9, said plug being removable to permit the entry of a lubricant, such as oil, or the like, within said cylinder 5. As shown in Fig. 1, said fitting 6 is provided with spout 10 whose end is reduced, as shown at 11, (see Fig. 4) to support the oiler tip 12. It will be understood that both spout and oiler tip are bored to provide a-continuous passageway extending from the interior of said cylinder 5. However, it will be noted in Fig. 4, that said passageway is under the control of a check valve, which includes the ball 13 and spring '14, one end of the latter element being held in position by pin 15, whilst its other end contacts said ball and normally forces the same against the seat 16 of the sleeve 17 mounted within said passageway.

The other end of said cylinder 5 is provided with a cap 18 having an opening 19 to receive the rack stem 20 carrying at one end the lubricant-expelling element 21, and being provided at its outer end witha knob 22. From the foregoing it is obvious that when the cylinder has been filled with a lubricant, said element 21 will be positioned adjacent said cap 18 and when said rack stem 20 is moved inwardly, said element or piston 21 forces the lubricant through the spout 10, thus unseating the ball 13 and permitting the discharge of the lubricant through said oiler tip 12. It will be noted in Fig. 1 that the end portion of said tip 12 is disposed angularly with relation to the horizontal axis of said spout thus facilitating the discharge of a lubricant to the particular part to be oiled. When the piston is at rest, said ball13 is forced back onto its seat 16, in view of the spring 14, so that no leakage can occur.

While the aforesaid operation of the rack stem and piston forces a quantity of lubricant through the oiler tip 12, it will be appreciated that there is no guide or means to determine the precise amount of the lubricant to be applied, and therefore, as pointed out hereinbefore, we propose to provide means whereby a predetermined quantity of a lubricant may be discharged in accordance with the particular needs of the service. The aforesaid means includes a bracket arrangement 23' borne by said cylinder 5, the lower end of said bracket being provided with an opening 24 that slidably receives the lateral portion 25 of lever 26, said lever being formed as shown in-Fig. 1 wherein it will be noted that the bent portion 27 is passed through an aperture 28 in the extension 29 of said cap 18. The outer end of said bent portion 27 carriesa guide all lubricant through the oiled tip 160.

rack 20.

A further inspection of Fig. 1 will reveal that said stem 20 is provided with a plurality of teeth 32, normally engaged by a pawl 33 whose lower end is bifurcated and pivotally pinned to said bent portion 27, as indicated at 3 1, (see Fig. 3), said normal engagement of said pawl with said stern being eficcted inview of thespring 35 arranged in the manner indicated in Figs. 1 and 3. From the foregoing it will be seen that/the bracket 23 serves as a handle in conjunction with lever 25 and when said handle is positioned in the hand of the operator and a squeezing action exercised, said lever .28 moves toward the bracket 23 and as one end of said pawl 33 en gages a selected tooth in the stem 29, the latter and its attached piston 21. moves. inwardly to force the lubricant from the cylinder as expiained hereinbefore. In order thatsaid piston may be moved a pro-determined distance, we

provide a stud36 that threadedly engages bore 37 in said bracket 23, (see Fig. 1), said stud being. provided with a head 38 which is contacted by said lever 26 thus limiting the movement of the latter and naturally the travel of the piston.

its normal position, whereupon it engages another tooth and theoperation of the device is repeated. Prior to the operation of said lever 26, said stud may be manipulated to vary the movement of said lever and the quantity of lubricant to be discharged through the 'oiler tip.

As shown in Fig. 5, the piston 21 includes a follower-plate 39, a washer 39a, andan expansion ring 48 which holds the latter in position as indicated, said ring 4o being engaged by a retainer 11. It will be understood that the particular arrangements of the check valve shown in Fig. 1, and the piston 21, shown in Fig. 5, are illustrative of the preferred forms, as minor alterations may be made in these constructions without departing from the spirit of the invention, or the scope of the claims.

The cylinder 154, shown in Fig. 6, is provided with a fitting having an apertured threaded boss 156 to receive the filler plug 157, spout 158 being suitably connected to said fitling 155 and having its outer end portion reduced in diameter as indicated at 159, (see Fig. 9), for the reception of the oiler tip 160. The particular check valve shown in Fig. 9 comprises a ball 161 normally held against its seat 162, of sleeve 163, by means of spring 164 having one end abutting cross-pin 165, and in view of this arrangement it is obvious that a lubricant projected through the passageway in said spout unseats said .ball 161 and permits the flow of said Obviously, the precise details of construction of said check valve may be varied if desired. The device further comprises a bracket arrangement, generally denoted by the numeral 166, one portion thereof being somewhat cylindric. to embrace said cylinder 154 adjacent said iitting 155, while rin 19 nd? eta 29:

plate '30 which is apertured at 31 to receive said its opposite end serves as a cap 167 which is provided with a bore 168 to receive the rack stem 169 carrying pision 170 at one end and a knob 171 at its other extremity, said stem 169 being provided with saw-teeth 172, as shown in Fig. 6. Thebracket 166 is extended below said cylinder 154 to provide a housing 173 for certain operative parts, to be described hereinafter, said bracket being continued to present a pistol-like portion 174 having a trigger" guard arrangement 175 positioned forwardly thereof. The extreme rear portion of said housing 173, just below said cap 167 is provided with a wall 176 having an aperture 177 extending therethrough to receive the rod 178 .whose inner end is passed through anaperture 179 in the lug 189, said apertures 177 and 179 being in alinement and serving as guides for said rod 178. The extreme end portion of said rod 178 extends beyond said lug 180 andisprovided with a washer 181 and nuts 182..

.As will presentlyv appear, it is proposed to the guard 175, has its upper portion extended into the housing 173 where it is pivoted at 184, that portion thereof above itspivotal connec- 1 tion being bifurcated, as indicated at 185, to straddle said rod 178 between lug 180 and washer 181, (see Fig. 6). Said rod 178 is extended beyond the aperture 177 to support the and 186 through thei'ntermediary of pin 187, and. it will be noted that the exposed portion of said rod 178 is threaded to carry nut 188. Said arm 186 is providedrwith arecess 189, (see Fig. 8), ands." bore 190 extending from the bottom of said recess, a spring" 191 being housed in said ,1 bore 1901mm which it is partially projected to abut the bottom of. a. ratchet 192, having a shank portion 193 and a head 19 1; Said ratchet 192 is also provided with a slot 195 for thereception of said rack stem 169' and it will be 19; noted that the bottom of said slot is arranged to engage a selected toothfof the saw-teeth 172. With the parts arranged as shown in Fig. 6 the grip portion 174 is grasped in the hand and the trigger-l83 is pulled back while the bifurcated 1 5 portion 185 thereof engages the washer181 to by nut 188 which threadedly engages said rod 35 178. I v I From the foregoing it will be-seen that when .the nut 188 contacts the Wall'176 of said housing 173 the movement of said rod is terminated and upon relieving the pressure on the trigger 183 149 the tension'ed springv 196 moves said'ro'd 178 rearwardlyfthe ratchet 192] having been 'depressed to freeit from engagement with the particular tooth of the saw-teeth'arrangement 172. When the rod has shifted rearwardly, said 145 ratchet engages another tooth and the operation iisfrepeated as aforesaid. The piston 170,,shown in Fig. 10,. comprises a follower plate 197 and a.

Washer 198 held in position by an expansion We claim:

1. A lubricating device comprising a cylinder having a discharge opening, a piston mounted in said cylinder, a slidable rack connected to said piston, a bracket depending from said cylinder and having an opening, a lever having a lateral portion slidably mounted in said opening, a spring-pressed pawl pivotally borne by said lever and adapted to engage said rack, guide means carried by one end of said lever and engageable with said rack, said lever being manually operable to impart inward movement to said piston and a threaded stud carried by said bracket and adapted to be adjusted to limit the travel of said piston.

2. A lubricating device comprising a cylinder having a discharge opening, a bracket having a cylindric portion embracing one end of said cylinder, and including a cap fitting over the opposite end of said cylinder, said cap having an opening, a rack slidably mounted in said opening, a piston carried by one end of said rack, said bracket being extended below said cylinder to form a housing and a pistol-like grip, said bracket further presenting an apertured end wall adjacent said cap, an apertured lug borne by said bracket, a rod slidably carried by said apertured end wall and lug, said rod extending beyond said end wall and being threaded, an arm afiixed to the projecting end of said rod, said arm being recessed, a spring-pressed pawl mounted in said recess and adapted to engage a selected tooth of said rack, a trigger pivotalljv mounted within said housing and having an end portion coupled to the end of said rod whereby the latter is moved inwardly tomove said rack and piston in the same direction, a spring embracing said rod between said end wall and said lug and adapted to be tensioned during the aforesaid movement of said rod to shift the latter in the direction opposite to its normal travel and adjustable means carried by said rod to vary the travel of said rack and piston.

3. A lubricating'device comprising a cylinder having a discharge opening, a piston mounted in said cylinder, a slidable rack connected to said piston, a bracket depending from said cylinder and having an opening, an apertured extension arranged adjacent one end of said cylinder, a lever having a lateral portion slidably mounted in the opening in said bracket, said lever having a bent portion slidably mounted in the aperture of said extension, a spring encircling said lateral portion of said lever, a spring-pressed pawl pivotally borne by said lever and adapted to engage said rack, guide means carried by one end of said lever and presenting an aperture to receive said rack, said lever being manually operable to impart inward movement to said piston, and a threaded stud carried by said bracket and adapted to be adjusted to limit the travel of said piston.

ALFRED C. TAYLOR.

EDWARD S. DU BOSE. 

